The four stars each donned an ugly Christmas sweater for Mark's "Holiday Spectacular," and drank lots and lots of booze, while caroling and cracking jokes at one another, in front of a Santa Claus who wore no pants.

In related news, the 42-year-old actor also awaits the release of his upcoming sci-fi action adventure, "Transformers: Age of Extinction," set for release on June 27th, 2014.

According to the movie's synopsis, "A mechanic and his daughter make a discovery that brings down Autobots and Decepticons - and a paranoid government official - on them."